The Fallen Ice Grid

A loud clatter echoed from the kitchen doorway! Gasp! I froze behind the sofa skirt, trembling. But when the noise faded, I crawled forward on my belly to inspect. There on the smooth linoleum lay a silicone ice-cube tray, dropped and upside down, surrounded by pristine, glistening cubes. Perfect, frosty cubes of solid clear water! I approached very slowly, holding my breath. I reached out a trembling hand and tapped the corner of one frozen block. Ah! Cold! Sharp, freezing cold shot through my fingertips. I tumbled backward onto my rear, clutching my hands tightly. But looking back... they formed the most sparkling, crystal-clear grid I had ever seen.